:root {
            --px5cu-primary: #bf0000;
            --px5cu-secondary: #2c3e50;
            --px5cu-accent: #3498db;
            --px5cu-bg-light: #f8f9fa;
            --px5cu-text-dark: #1a1a1a;
            --px5cu-text-muted: #666;
            --px5cu-white: #ffffff;
            --px5cu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --px5cu-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--px5cu-text-dark);
            line-height: 1.7;
            background-color: var(--px5cu-white);
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .px5cu-nav-container {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 0 24px;
        }

        .px5cu-nav-inner {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .px5cu-logo {
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .px5cu-logo img {
            height: 40px;
            width: auto;
        }

        .px5cu-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
        }

        .px5cu-menu a {
            text-decoration: none;
            color: var(--px5cu-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--px5cu-transition);
            word-break: keep-all;
        }

        .px5cu-menu a:hover {
            color: var(--px5cu-primary);
            background: rgba(191, 0, 0, 0.05);
        }

        .px5cu-menu a.px5cu-active {
            color: var(--px5cu-white);
            background: var(--px5cu-primary);
        }

        /* Hero 区块 - 独特非对称设计 */
        .px5cu-hero {
            padding: 160px 24px 96px;
            background: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
            position: relative;
            overflow: hidden;
        }

        .px5cu-hero-content {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .px5cu-hero-text {
            flex: 1;
            min-width: 320px;
            word-break: keep-all;
        }

        .px5cu-hero-text h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            color: var(--px5cu-secondary);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .px5cu-hero-text p {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            color: var(--px5cu-text-muted);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .px5cu-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        .px5cu-encoding-card {
            background: var(--px5cu-white);
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--px5cu-shadow);
            border: 1px solid rgba(0,0,0,0.05);
            transform: rotate(2deg);
        }

        .px5cu-code-snippet {
            background: #282c34;
            color: #abb2bf;
            padding: 20px;
            border-radius: 12px;
            font-family: monospace;
            font-size: 14px;
            margin-bottom: 16px;
        }

        /* 核心解决方案区块 */
        .px5cu-solution-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .px5cu-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .px5cu-section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 16px;
            word-break: keep-all;
        }

        .px5cu-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .px5cu-card {
            background: var(--px5cu-bg-light);
            padding: 40px;
            border-radius: 16px;
            transition: var(--px5cu-transition);
            border: 1px solid transparent;
        }

        .px5cu-card:hover {
            transform: translateY(-8px);
            background: var(--px5cu-white);
            border-color: var(--px5cu-primary);
            box-shadow: var(--px5cu-shadow);
        }

        .px5cu-card h3 {
            margin-bottom: 16px;
            color: var(--px5cu-primary);
        }

        /* 企业级工作流同步 */
        .px5cu-workflow-section {
            padding: 96px 24px;
            background: var(--px5cu-secondary);
            color: var(--px5cu-white);
        }

        .px5cu-workflow-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .px5cu-workflow-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 48px;
        }

        .px5cu-workflow-item {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 12px;
            border-left: 4px solid var(--px5cu-primary);
        }

        .px5cu-tag {
            display: inline-block;
            background: var(--px5cu-primary);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            margin-bottom: 16px;
        }

        .px5cu-efficiency {
            color: #2ecc71;
            font-weight: bold;
            display: block;
            margin-top: 16px;
        }

        /* 动态内容标记区块 */
        .px5cu-articles-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        /* 页脚 */
        .px5cu-footer {
            padding: 64px 24px;
            background: #1a1a1a;
            color: #888;
            text-align: center;
        }

        .px5cu-footer-brand {
            font-size: 24px;
            color: var(--px5cu-white);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .px5cu-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
        }

        .px5cu-footer-links a {
            color: #888;
            text-decoration: none;
            transition: color 0.3s;
        }

        .px5cu-footer-links a:hover {
            color: var(--px5cu-white);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .px5cu-nav-inner {
                height: auto;
                padding: 16px 0;
            }
            .px5cu-menu {
                margin-top: 16px;
                justify-content: center;
                gap: 8px;
            }
            .px5cu-hero {
                padding-top: 120px;
            }
            .px5cu-hero-text {
                text-align: center;
            }
            .px5cu-hero-text p {
                margin-left: auto;
                margin-right: auto;
            }
        }

        /* 动画安全 */
        .px5cu-animate-up {
            transition: transform 0.6s ease;
        }
        .px5cu-animate-up:hover {
            transform: translateY(-5px);
        }